Viewer



Nov. 11, 1958 R. L. PRUNER 2,859,548

' vIEwER Filed March 12, I1957 2 sheets-sheet 1 INVENTOR. 21. 'EQNALD LPRUNEP. :l 5

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R. L. PRUNER Nov. 11, 1958' VIEWER 2 Sheets-Sheet 2 Filed March l2, 1957 'PIG-.6 I

ww m Mw @wm D A W N Kw W United States Patent() VIEWER Ronald L. Pruner, Merrill, Wis.

Application March 12, 19.57, Serial No. 645,474

2 Claims. (Cl. 40-63) which may be economically manufactured; one which may be fabricated from inexpensive sheet stock such as cardboard, plastic, and the like; one which may be assembled without tools or machinery by relatively unskilled labor; and one which is highly efficient in action.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawings, in which:

Figure l is a perspective view of the assembled viewer, showing a film strip inserted therein for viewing;

Figure 2 is a perspective view of the assembly of Figure l without the lrn strip and taken from the rear end of the viewer;

Figure 3 is a sectional view, on an enlarged scale, taken on` the line 3-3 of Figure 1;

Figure 4 is a sectional view, on an enlarged scale, taken on the line 4-4 of Figure l;

Figure 5 is a sectional view taken on the line 5-5 of Figure 3;

Figure 6 is a sectionalview on the line 6-6 of Figure 3; and

Figure 7 is a plan view of the unformed blank of sheet material before folding.

Referring in greater detail to the drawings in which like numerals designate like parts throughout the several views, the viewer according to the present invention cornprises an article of manufacture for use in producing a viewers structure, the structure consisting in an open ended collapsible box-like tube, designated generally by the reference numeral 10, having four elongated sections 11, 12, 13, and 14 interconnected by fold lines along their abutting longitudinal edges so that the tube 10 may be collapsed from its box-like formation, Figures 1 to 6, inclusive, to a substantially ilattened condition, Figure 7.

Referring to Figure 7, the section 11 is shown connected to the section 12 along a fold line 15 extending along the abutting edges of the sections 11 and 12, the section 12 connected to the section 13 by a fold line 16, and section 13 connected to the section 14 by another fold line 17. A rst flap 18 is foldable inwardly along a fold line 19 from one edge of the section 12 and closes one end of the tube 10 and a second flap 21 is foldable along another fold line 22 inwardly from the opposite end edge of the section 12 and closes the opposite end of the tube 10.

A n open ended pocket 23 is provided on the outer face 2,859,548 Patented' Nov. 11, 1958 ice of the section 14 opposite to the section 12. The pocket 23 is formed by a flap 24 cut away inwardly at each of its ends and connected by a fold line 25 to the abutting side edge of the section 11 remote from the section 12. A closed slot 26 is provided inthe fold line 25 intermediate the ends of the latter which receivably engages a short tab 27 projecting from the one side edge of the section 14 remote from the section 13 intermediate the ends of the section 14. A layer of adhesive 28 is provided along a strip extending from one end to the other end of the ap 24 remote from the fold line 26 and seals the flap 24 to the outer surface of the section 14 to form the pocket 23.

A tab 29 is interconnected by a fold line 31 to the free end edge of the flap 18 and has a portion cut away along one edge, as at 32, which enables the tab 29 to be folded interiorly of the adjacent one open end of the pocket 23, as shown most clearly in Figure 2. Another tab 33 is interconnected by a fold line 34 to the free end edge of the flap 21 and has a similar portion cut away along one edge, as at 35, enabling the tab 33 to be folded interiorly ofthe other open end of the pocket 23, both the tabs 29 and 33 being folded interiorly into the open ends of the pocket 23 when the aps 18 and 21 are folded inwardly to close the open ends of the tube 10.

The flap 18 is provided with a viewing aperture 36 and a lens 37 bridging the viewing aperture 36 is carried by the flap 18.

The flap 21 is provided with a light admitting opening 38 bridged by a translucent window 39 which has its borders cemented to the flap 21 around the opening 38.

The sections 11 and 13, between the sections 12 and 14, respectively, when the sections are in their box-like tube formation, are cut away as at 41 and 42, respectively,

inwardly from theend of such sections 11 and 13 adjacent the flap 12 and inwardly of the fold line 22. The cut away ends of the sections 11 and 13 formwith the second ap 21, whenV the blank has been shifted to its folded position to form the tube 10, registering slots 43 for the insertion and withdrawal therethrough of a picture carrying slide member 44. The means by which the lens 37 is carried by the ap 18 includes a further ap 45`interconnected along'the side edge of the Hap 18 by a fold line 46 and cut away along each of its free edges 47, 48, and 49 so as to have such free edges (Fig. 6) out of engagement with the adjacent end edges of the sections 12, 11, and 14, respectively. l

When the structure is in its unfolded condition, the elongated sections 11, 12, 13, and 14, are arranged in side by side abutting relation and are interconnected by fold lines 15, 16, and 17 along their longitudinal edges. The tab 27, connected by a fold line 54 to the outermost side edge of the outermost section 14 constitutes attaching means by which the outermost side edge of the section 14 is attached to the other outermost section 11, the tab 27 being received in the slot 26 provided in fold line 25 which connects section 11 to the ap 24, forming a foldable blank of an open ended box-like tube in an open collapsible condition.

In assembling the structure from its blank form (Fig. 7) to its position forming the open ended co1- lapsible box-like tube 10, the sections 11v and 12 are rst bent along the fold line 15, the sections 12 and` 13 along the fold line 16, and the sections 13 and 14 along the fold line 17 with the tab 27 entering the slot 26 and folded on its fold line 54. The flap 24 is folded on the outer face of the section 14 along the fold line 25 with the tab 27 entering the slot 26 and with the tab 24 secured by adhesive 28 to the outer face of the section 14. The portion of the flap 24 inwardly of the adhesive 28 forms a pocket receiving the tabs 29 and 33 of the flaps 18 and 21, respectively, when the aps 18 and 21 are folded along the fold lines 31 and 22,.,y respectively, to close the open ends of the Ambe..

s section' 14 formed' between the'ap 24 and the section.;141byany ,suitable means or they may bepleit freeQto' be removed p therefrom forppartial folding and collapsing of the tube 10 to anymsize convenient to ca'rr'y or .tolany size Yinsertable intoan ordinary businessenvelope; t

I t -is intendedfthat the'strip44'be provided itsxcentral portion jwithja transparent -v hlmV piece' 55 having thereon either separate for ,a continuous photograph of LV'the' articles' to be displayed and viewed through the viewer pf-the present invention. Y

l. An article (yf-manufacture for use in producing a viewerfstructurefA said 4structurecoinprising open ended collapsible box-like Ytubel'laving four elongated sections yinterconnected -by` fold lines alongtheir Vabutting longitudinal edgesV so that'said tube may be collapsed into a substantially flattened condition, a rst ap foldable inwardly trombone end edge of one of said 'sections and closing one-kend Vof saidtubepa secondapfoldable @inwardly from the opposite end edge of said one section land closing the opposite end of said tube, an open ended t pocket ontheouter face lof the section oppositesaid one section, a tab interconnected by a foldv line tok thefree end edge of each of said tiaps, the tabsgof said flaps being -folded interiorly into the open end of said pocket when said rst and second yii'aps are folded inwardlyV to close the ends of said tube,A said iirstvflap being provided with a'viewing aperture, a lens bridging said viewingaperture n and carried by said rst ap, there being a light admitf ting opening in-said second flap, and a translucent window 4bridging said=opening and carried by said second flap,

the sections between said one section and lsaid Vsection opposite said one section being cut away inwardly from the end adjacent said second flap to form vwiths'aidsecnncl flap when said blank has been shifted to its box-like tube position registering slots for insertion and Withdrawal therethrough of a picture carrying slide member.

2. An article of manufacture for use in producing a viewer structure, said structure comprising four elongated sections arranged in side'by side abutting relation and interconnected by fold lines along their longitudinal edges, attaching means connecting the non-abutting longitudinal edges of the outermost sections together-by a fold line to thereby form a foldable blank of an open ended box-lilce tube in an open collapsible condition, a rst ap' adapted to be folded inwardly fromione end edge of said one of said sections and to close one end of said tube when said blank has been shifted to its open collapsible position, a second flap adapted to be folded inwardly from the opposite end edge of said onesection and `toclose the opposite endY of said tube when said blank' has been shifted'Y to its open collapsible'. position, an openended pocket on the outer face of thesection opposite said one section when said blank has beenshifted toits open collapsible position, a tab interconnected by a fold .line to s l lenslbridging said viewing aperture and carried by said second ap, andy a translucent window bridging said iirstvap,l there beingfa'lightadmitting opening in said openingand-barriedby said second flap, the sections be tween :said one section and said section opposite said one ,sectionbeing reut awayinv/'ardly ,from the endadjacent rsaid 'second flap to form withsaid second flap when said blank has been shifted to its box-liketube positionfregistering slots for insertion and withdrawal therethrough of a picture carryingslide member. s

References Citedinthe tilerofthis patent 4 UNITED STATES PATENTS,

32,071,121 JH:Harlow Pebl-16;; 1937 2,543,240 HlllChDSOIl Feb.'4 1951 2,768,554 Leslie Oct. 30, 1956 

